Death Points to Risks in Research: One Woman's Experience in Gene Therapy Trial Highlights Weaknesses in the Patient Safety Net

Robb Mohr sat by his wife's hospital bed two weeks ago, trying to take it all in. His wife, Jolee Mohr, was breathing with the help of a ventilator in a Chicago intensive care unit -- her body bloated from internal bleeding, her liver failing -- and no one could figure out what was wrong with her.

Robb Mohr had his suspicions. Jolee, 36, had been feeling fine just a few weeks earlier, save for occasional stiffness from her arthritis. Her decline had begun the day after her right knee was injected with an experimental drug made of genetically engineered viruses. Doctors at the hospital shared his concern.

Jolee Mohr died from massive bleeding and organ failure July 24, leaving behind a 5-year-old daughter and a host of questions about why she was recruited into a gene therapy experiment whose chief goal was to test the safety of a novel arthritis treatment that had virtually no chance of helping her.

No one knows yet whether the treatment was to blame. Of the dozens of other volunteers who got the injections...